2015-02-12 11:37:55 +08:00
|
|
|
// Make sure we don't match the -NOT lines with the linker invocation.
|
|
|
|
|
// Delimiters match the start of the cc1 and the start of the linker lines
|
[Clang][Driver] Re-use the calling process instead of creating a new process for the cc1 invocation
With this patch, the clang tool will now call the -cc1 invocation directly inside the same process. Previously, the -cc1 invocation was creating, and waiting for, a new process.
This patch therefore reduces the number of created processes during a build, thus it reduces build times on platforms where process creation can be costly (Windows) and/or impacted by a antivirus.
It also makes debugging a bit easier, as there's no need to attach to the secondary -cc1 process anymore, breakpoints will be hit inside the same process.
Crashes or signaling inside the -cc1 invocation will have the same side-effect as before, and will be reported through the same means.
This behavior can be controlled at compile-time through the CLANG_SPAWN_CC1 cmake flag, which defaults to OFF. Setting it to ON will revert to the previous behavior, where any -cc1 invocation will create/fork a secondary process.
At run-time, it is also possible to tweak the CLANG_SPAWN_CC1 environment variable. Setting it and will override the compile-time setting. A value of 0 calls -cc1 inside the calling process; a value of 1 will create a secondary process, as before.
Differential Revision: https://reviews.llvm.org/D69825
2020-01-13 23:40:04 +08:00
|
|
|
// DELIMITERS: {{^ (\(in-process\)|")}}
|
2015-02-12 11:37:55 +08:00
|
|
|
|
|
|
|
|
// RUN: %clang -### -pedantic -no-pedantic %s 2>&1 | FileCheck -check-prefix=NO_PEDANTIC -check-prefix=DELIMITERS %s
|
|
|
|
|
// RUN: %clang -### -pedantic -Wno-pedantic %s 2>&1 | FileCheck -check-prefix=PEDANTIC -check-prefix=DELIMITERS %s
|
2012-07-07 13:53:30 +08:00
|
|
|
// NO_PEDANTIC-NOT: -pedantic
|
2015-02-12 11:37:55 +08:00
|
|
|
// RUN: %clang -### -pedantic -pedantic -no-pedantic -pedantic %s 2>&1 | FileCheck -check-prefix=PEDANTIC -check-prefix=DELIMITERS %s
|
|
|
|
|
// RUN: %clang -### -pedantic -pedantic -no-pedantic -Wpedantic %s 2>&1 | FileCheck -check-prefix=NO_PEDANTIC -check-prefix=DELIMITERS %s
|
2012-07-07 13:53:30 +08:00
|
|
|
// PEDANTIC: -pedantic
|
2012-12-11 15:06:09 +08:00
|
|
|
// REQUIRES: clang-driver
|
2015-02-12 11:37:55 +08:00
|
|
|
|
|
|
|
|
// DELIMITERS: {{^ *"}}
|